neorv32_smp.h

Go to the documentation of this file.

// ================================================================================ //
// The NEORV32 RISC-V Processor - https://github.com/stnolting/neorv32              //
// Copyright (c) NEORV32 contributors.                                              //
// Copyright (c) 2020 - 2025 Stephan Nolting. All rights reserved.                  //
// Licensed under the BSD-3-Clause license, see LICENSE for details.                //
// SPDX-License-Identifier: BSD-3-Clause                                            //
// ================================================================================ //

 
#ifndef neorv32_smp_h
#define neorv32_smp_h
 
 
/**********************************************************************/
int      neorv32_smp_launch(int (*entry_point)(void), uint8_t* stack_memory, size_t stack_size_bytes);
void     neorv32_smp_icc_push(uint32_t data);
uint32_t neorv32_smp_icc_pop(void);
 
 
/**********************************************************************/
inline uint32_t __attribute__ ((always_inline)) neorv32_smp_whoami(void) {
 
  return neorv32_cpu_csr_read(CSR_MHARTID);
}
 
 
/**********************************************************************/
inline uint32_t __attribute__ ((always_inline)) neorv32_smp_icc_get(void) {
 
  return neorv32_cpu_csr_read(CSR_MXICCDATA);
}
 
 
/**********************************************************************/
inline void __attribute__ ((always_inline)) neorv32_smp_icc_put(uint32_t data) {
 
  neorv32_cpu_csr_write(CSR_MXICCDATA, data);
}
 
 
/**********************************************************************/
inline int __attribute__ ((always_inline)) neorv32_smp_icc_avail(void) {
 
  return neorv32_cpu_csr_read(CSR_MXICCSREG) & (1 << CSR_MXICCSREG_RX_AVAIL);
}
 
 
/**********************************************************************/
inline int __attribute__ ((always_inline)) neorv32_smp_icc_free(void) {
 
  return neorv32_cpu_csr_read(CSR_MXICCSREG) & (1 << CSR_MXICCSREG_TX_FREE);
}
 
#endif // neorv32_smp_h